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Finding the Fourth Proportional to 2,199.91, 3,035.91 and 1,361.20

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Solution

The fourth proportional to 2,199.91, 3,035.91 and 1,361.20 is: 1,878.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.91 : 3,035.91 = 1,361.20 : x
  2. Step 2: Convert to fraction form
    2,199.91/3,035.91 = 1,361.20/x
  3. Step 3: Cross multiply
    2,199.91x = 3,035.91 × 1,361.20
  4. Step 4: Simplify right side
    2,199.91x = 4,132,480.69
  5. Step 5: Solve for x
    x = 4,132,480.69/2,199.91
  6. Step 6: Final answer
    x = 1,878.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.